Oklahoma National History Day is more than an academic exercise for thousands of Oklahoma junior high and high school students; it is a tradition. On Wednesday, May 4, and Thursday, May 5, more than 200 6th through 12th grade students will present their exhibits, documentaries, performances, websites and papers at the Oklahoma History Center in Oklahoma City for the opportunity to advance to the National History Day® contest held each summer. Due to the size of the event, there will…